Security Hologram Sticker
If you want to make a shiny, iridescent material, it is very simple.  All you need to do is follow my node setup, which I have provided below:
once that is done, you should have a very iridescent material (see image below).

If you want  to make a security hologram-like sticker in your question, you can simply texture paint an image of a sticker onto a mesh, then add a mix shader and mix your iridescent shader with the image texture (see image below)

hope this helped!  If you encounter further problems, let me know and I'll be happy to help. : )
(PS, you might need to enlarge the images to see the node setup.   sorry about how small they are)